/* ==========================================================
   DENTAL HERPAN — Capa visual premium
   Carga DESPUÉS de styles.css. Solo mejora visual/movimiento.
   No toca SEO, textos ni la constelación del hero.
   ========================================================== */

/* ====== 1. TOKENS ADICIONALES ====== */
:root {
  --navy-deep:   #0d1b3e;
  --navy-soft:   #1b3261;
  --gold-bright: #e8c97a;
  --gold-dim:    #8a6f33;
  --ink:         #101728;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-elegant:  cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 0.35s;
  --dur-med:  0.7s;
  --dur-slow: 1.1s;
}

/* Contenido siempre por encima del hilo dorado (z-index 1) */
.container { position: relative; z-index: 2; }

/* ====== 2. HILO DORADO ====== */
.gold-thread {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;            /* JS lo ajusta a la altura real */
  pointer-events: none;
  z-index: 1;
  opacity: 0.65;
  transition: opacity 0.5s ease;
}
.gold-thread.is-moving { opacity: 0.9; }
.gold-thread__path {
  filter: drop-shadow(0 0 4px rgba(201, 162, 75, 0.35));
}

/* Estrella fugaz que recorre el hilo con el scroll */
.gold-thread__tail {
  filter: drop-shadow(0 0 8px rgba(232, 201, 122, 0.8));
  opacity: 0;
  transition: opacity 0.5s ease;
}
.gold-thread__star {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.gold-thread__star-core {
  filter: drop-shadow(0 0 5px #fff3cf);
  animation: star-spin 6s linear infinite;
  transform-origin: center;
  transform-box: fill-box;
}
@keyframes star-spin {
  to { transform: rotate(360deg); }
}
.gold-thread__star-glow {
  animation: star-pulse 1.6s ease-in-out infinite;
  transform-origin: center;
  transform-box: fill-box;
}
@keyframes star-pulse {
  0%, 100% { transform: scale(1);    opacity: .9; }
  50%      { transform: scale(1.35); opacity: 1; }
}
/* Visible mientras el usuario hace scroll (clase puesta por premium.js) */
.gold-thread.is-moving .gold-thread__tail,
.gold-thread.is-moving .gold-thread__star {
  opacity: 1;
}

@media (max-width: 768px) {
  .gold-thread { opacity: 0.4; }
  .gold-thread.is-moving { opacity: 0.75; }  /* la estrella sí se nota en móvil */
  .gold-thread__path { stroke-width: 1; filter: none; }   /* drop-shadow sobre un SVG de toda la página es caro en móvil */
  .gold-thread__tail { stroke-width: 1.6; filter: none; }
  .gold-thread__star-core { filter: none; }
}

/* Pausar marquees cuando no están en pantalla (batería/CPU en móvil) */
.is-paused .marquee-items,
.is-paused .reviews-marquee {
  animation-play-state: paused !important;
}

@media (prefers-reduced-motion: reduce) {
  .gold-thread__tail, .gold-thread__star { display: none; }
}

/* ====== 4. REVELADO EN CASCADA (mejora del sistema existente) ====== */
.reveal-up, .reveal-left, .reveal-right {
  filter: blur(6px);
  transition:
    opacity var(--dur-med) var(--ease-out-expo),
    transform var(--dur-med) var(--ease-out-expo),
    filter var(--dur-med) var(--ease-out-expo);
  will-change: opacity, transform;
}
.reveal-up.visible, .reveal-left.visible, .reveal-right.visible {
  filter: blur(0);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  filter: blur(6px);
  transition:
    opacity var(--dur-med) var(--ease-out-expo),
    transform var(--dur-med) var(--ease-out-expo),
    filter var(--dur-med) var(--ease-out-expo);
  transition-delay: calc(var(--reveal-i, 0) * 90ms);
  will-change: opacity, transform;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
  filter: blur(0);
}
[data-reveal="left"]  { transform: translateX(-48px); }
[data-reveal="right"] { transform: translateX(48px); }
[data-reveal="scale"] { transform: scale(0.94); }

@media (max-width: 768px) {
  /* Distancias menores y blur más barato para GPUs de teléfono */
  .reveal-up    { transform: translateY(20px); filter: blur(3px); }
  .reveal-left  { transform: translateX(-20px); filter: blur(3px); }
  .reveal-right { transform: translateX(20px); filter: blur(3px); }
  [data-reveal] { transform: translateY(20px); filter: blur(3px); }
  .reveal-up.visible, .reveal-left.visible, .reveal-right.visible { transform: none; }
}

/* ====== 5.1 GRADIENTES ENCADENADOS ENTRE SECCIONES ====== */
/* Principio: el color final de una sección = color inicial de la siguiente */
.stats-bar {
  background: linear-gradient(180deg, #fdfcf9 0%, var(--white) 100%);
}
.endo-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--cream) 16%, var(--cream) 100%);
}
.why-section {
  background: linear-gradient(180deg, var(--cream) 0%, var(--white) 12%, var(--white) 84%, #0B1628 100%);
}
.clinic-section {
  background: linear-gradient(180deg, #0B1628 0%, var(--white) 13%, var(--white) 87%, #0B1628 100%);
}
.appointment-section {
  background: linear-gradient(180deg, #0B1628 0%, var(--gray-50) 12%, var(--gray-50) 100%);
}
.faq-section {
  background: linear-gradient(180deg, var(--cream) 0%, var(--cream) 86%, #0B1628 100%);
}
.social-section {
  background: linear-gradient(180deg, #0B1628 0%, #0B1628 80%, #060e20 100%) !important;
}

/* ====== 5.2 SEPARADORES ART-DECO ====== */
.deco-divider {
  display: flex; align-items: center; gap: 16px;
  position: relative;
  z-index: 2;
  padding: 14px calc(50% - 260px);  /* línea centrada ~520px, fondo a todo el ancho */
}
@media (max-width: 600px) {
  .deco-divider { padding: 14px 32px; }
}
.deco-divider--dark { background: #0B1628; }
.deco-divider__line {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 50%, transparent);
  transform: scaleX(0);
  transition: transform var(--dur-slow) var(--ease-elegant);
}
.deco-divider.is-visible .deco-divider__line { transform: scaleX(1); }
.deco-divider__diamond {
  opacity: 0; transform: rotate(0deg) scale(0.4);
  transition: opacity var(--dur-med) var(--ease-out-expo) 0.4s,
              transform var(--dur-med) var(--ease-out-expo) 0.4s;
  flex-shrink: 0;
}
.deco-divider.is-visible .deco-divider__diamond {
  opacity: 1; transform: rotate(90deg) scale(1);
}

/* ====== 7. CARDS DE TRATAMIENTOS — micro-interacciones ====== */
.t-card {
  transition: transform var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast) var(--ease-out-expo),
              border-color var(--dur-fast),
              background var(--dur-fast);
}
.t-card::after {                 /* brillo que sigue al cursor */
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
              rgba(201, 162, 75, 0.13), transparent 65%);
  opacity: 0;
  transition: opacity var(--dur-fast);
  pointer-events: none;
}
@media (hover: hover) {
  .t-card:hover {
    transform: translateY(-8px);
    border-color: var(--gold);
    box-shadow: 0 18px 44px -14px rgba(0, 0, 0, 0.5),
                0 0 0 1px rgba(201, 162, 75, 0.35);
  }
  .t-card:hover::after { opacity: 1; }
}
.t-card .t-card-icon {
  transition: transform var(--dur-fast) var(--ease-out-expo),
              color var(--dur-fast), background var(--dur-fast);
}
.t-card:hover .t-card-icon {
  transform: rotate(-6deg) scale(1.12);
  color: var(--gold-bright);
}

/* Card destacada: Endodoncia (especialidad de la casa) */
.t-card--featured {
  background: var(--navy-soft);
  border-color: rgba(201, 162, 75, 0.45);
  box-shadow: 0 0 0 1px rgba(201, 162, 75, 0.25),
              0 12px 36px -12px rgba(0, 0, 0, 0.45);
}
.t-card--featured .t-card-icon { color: var(--gold-bright); }
.t-card__badge {
  display: inline-block;
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--navy-deep);
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
  border-radius: 999px;
  padding: 4px 11px;
  margin-bottom: 12px;
}

/* ====== 8. BOTONES CTA — efecto "lingote" ====== */
.btn-gold {
  position: relative;
  background: linear-gradient(135deg, var(--gold-dim), var(--gold) 45%, var(--gold-bright) 55%, var(--gold));
  background-size: 220% 100%;
  background-position: 100% 0;
  color: var(--navy-deep);
  font-weight: 700;
  border-radius: 999px;
  overflow: hidden;
  transition: background-position 0.6s var(--ease-elegant),
              transform var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast);
}
.btn-gold:hover {
  background-position: 0 0;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px -8px rgba(201, 162, 75, 0.55);
}

/* Destello diagonal en CTAs principales (incluye WhatsApp, sin cambiar su verde) */
.btn-gold, .btn-wa, .hm-btn-primary, .btn-nav-cta, .btn-primary {
  position: relative;
  overflow: hidden;
}
.btn-gold::after, .btn-wa::after, .hm-btn-primary::after,
.btn-nav-cta::after, .btn-primary::after {
  content: '';
  position: absolute; top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,0.45), transparent);
  transform: skewX(-20deg);
  pointer-events: none;
}
.btn-gold:hover::after, .btn-wa:hover::after, .hm-btn-primary:hover::after,
.btn-nav-cta:hover::after, .btn-primary:hover::after {
  animation: btn-shine 0.9s var(--ease-elegant);
}
@keyframes btn-shine { to { left: 130%; } }

/* Nav CTA con acabado lingote completo */
.btn-nav-cta {
  background: linear-gradient(135deg, var(--gold-dim), var(--gold) 45%, var(--gold-bright) 55%, var(--gold));
  background-size: 220% 100%;
  background-position: 100% 0;
  transition: background-position 0.6s var(--ease-elegant),
              transform var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast);
}
.btn-nav-cta:hover {
  background-position: 0 0;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px -8px rgba(201, 162, 75, 0.55);
}

/* ====== 9. NAVBAR ====== */
.navbar.scrolled {
  background: rgba(13, 27, 62, 0.82);
  box-shadow: 0 1px 0 rgba(201, 162, 75, 0.25),
              0 8px 30px -12px rgba(0, 0, 0, 0.5);
}
/* Subrayado dorado animado */
.nav-link { position: relative; }
.nav-link::after {
  content: ''; position: absolute; left: 12px; right: 12px; bottom: 2px;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: right;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }

/* Barra de progreso de lectura (la crea premium.js) */
.nav-progress {
  position: absolute;
  left: 0; bottom: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--gold-dim), var(--gold), var(--gold-bright));
  box-shadow: 0 0 8px rgba(201, 162, 75, 0.55);
  pointer-events: none;
}

/* ====== 10.1 MARQUEE ====== */
.marquee-band:hover .marquee-items { animation-play-state: paused; }
.marquee-band .marquee-dot { transition: opacity var(--dur-fast); }
.marquee-band:hover .marquee-dot { opacity: .9; }

/* ====== 10.2 MARCO ART-DECO + PARALLAX FOTOS DOCTORA ====== */
.endo-img-wrap::before {
  content: '';
  position: absolute;
  inset: 10px -10px -10px 10px;
  border: 1px solid var(--gold);
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: -1;
  opacity: .7;
}
.endo-photo {
  border: 3px solid var(--navy);
  will-change: transform;
}
.clinic-img-deco {
  border: 4px solid var(--navy);
  box-shadow: 10px 10px 0 -1px transparent, 10px 10px 0 0 var(--gold);
}
.dra-photo {
  transform: scale(1.08);
  will-change: transform;
}

/* ====== 10.3 RESEÑAS — carrusel automático ====== */
.reviews-track--auto {
  overflow: hidden;
  scroll-snap-type: none;
  cursor: default;
}
.reviews-track--auto .reviews-marquee {
  display: flex;
  gap: 20px;
  flex-shrink: 0;
  padding-right: 20px;
  animation: reviews-scroll 45s linear infinite;
}
.reviews-track--auto:hover .reviews-marquee { animation-play-state: paused; }
@media (max-width: 768px) {
  .reviews-track--auto .reviews-marquee { animation-duration: 60s; }  /* más lento y legible en pantalla angosta */
}
@keyframes reviews-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

/* ====== 10.4 FAQ — apertura suave (progresivo, Chrome 131+) ====== */
.faq-item { interpolate-size: allow-keywords; }
.faq-item::details-content {
  block-size: 0;
  overflow: hidden;
  transition: block-size var(--dur-med) var(--ease-out-expo),
              content-visibility var(--dur-med) allow-discrete;
}
.faq-item[open]::details-content { block-size: auto; }
.faq-chevron { transition: transform var(--dur-fast) var(--ease-out-expo); }

/* ====== 10.5 POPUP DRA. ALICIA ====== */
.exit-box {
  transform: translateY(16px) scale(0.92);
  transition: transform .55s var(--ease-out-expo), opacity .4s ease;
  opacity: 0;
}
.exit-overlay.show .exit-box { transform: none; opacity: 1; }

/* ====== 11. ACCESIBILIDAD — prefers-reduced-motion ====== */
@media (prefers-reduced-motion: reduce) {
  .reveal-up, .reveal-left, .reveal-right,
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
  .deco-divider__line { transform: scaleX(1); transition: none; }
  .deco-divider__diamond { opacity: 1; transform: rotate(90deg) scale(1); transition: none; }
  .gold-thread__path { stroke-dashoffset: 0 !important; }
  .marquee-items { animation: none; }
  .reviews-track--auto .reviews-marquee { animation: none; }
  .btn-gold::after, .btn-wa::after, .hm-btn-primary::after,
  .btn-nav-cta::after, .btn-primary::after { display: none; }
  .endo-photo, .dra-photo { transform: none !important; }
  .faq-item::details-content { transition: none; }
  .exit-box { transition: none; opacity: 1; transform: none; }
}